Scott Snyder's run on Batman has a hint of horror to it and is one of the best takes on Batman since Frank Miller.
Snyder's "Batman: The Black Mirror" is my favorite newer Batman tale... but under the cowl is not Bruce Wayne it's Dick Grayson. So the confusing aspect of comic is in my recommendation, Batman was lost in time and the original Robin took over for him... but don't let that stop you it is one of the best Batman stories.
The story that Snyder weaves is an increasingly tied together saga of how Gotham corrupts its heroes, formfitting its challenges to the characters that experience them. Though they start separately, the tale of Dick Grayson assimilating to the new villains awaiting him on the streets of Gotham and Gordon's past coming back to haunt him eventually tie together in a crescendo of horrific beauty, playing on the expectations of the reader while expanding the Bat-mythos wide open in both love letter and forward-thinking fashion.
If having some lost in time Bruce Wayne is not cool check out Snyder's run on the New 52 Reboot from about 10 years ago: "Batman: The Court of Owls Saga"
“[Writer Scott Snyder] pulls from the oldest aspects of the Batman myth, combines it with sinister-comic elements from the series’ best period, and gives the whole thing terrific forward-spin by setting up an honest-to-gosh mystery for Batman to solve.” —Entertainment Weekly
If your one who's become a fan of Snyder's work in Batman, such as Scott Snyder's other Bat-book Pre-52 was the Black Mirror, which was a dark, horror-like take with Dick Grayson as Batman...Snyder's take on Bruce Wayne is more suspenseful, action-packed sort of history lesson on Gotham. This makes Court of Owls a very different beast then Black Mirror. So if your one who loved BM, you might quite not be into CoO's as much (though I doubt it. Snyder's work is still solid). And if you're a new reader, this will be a great jumping on point (the other Snyder Bat-book is Gates of Gotham which isn't necessary, but still an interesting read).
Now for Superman, who is my favorite comic hero, it is harder to recommend something. My favorite Superman tale is about 20 years old but it's great: "Superman For All Seasons".
As one of the biggest icons of both DC Comics and comic books in general, Superman is no stranger to great stories. One of his most overlooked, but easily one of his best, is Superman for All Seasons (by Jeph Loeb and the late Tim Sale).
Nothing illustrates this better than Tim Sale's artwork. There's an almost Norman Rockwell quality to how Sale draws Smallville, giving it a true small-town charm. Add in the colors, and everything pops off of the page in a way that invites the reader into the story's world. Clark's large size and standoffish gaze make him seem like a reckless young man at odds with his current circumstances and unsure of his destiny.
Both the writing and beautiful art of Superman for All Seasons are timeless, classic and transcendental in how they carry the essence of the Man of Tomorrow in a somber yet hopeful whisper.
If you are not big on continuity and want more fun, the Elseworlds titles are fun. A great Superman book, with lots of Batman, is "Superman: Red Son" which tells the story of what would have happened if Kal-El would have landed in Russia instead of Kansas.
“With its moral complexity and a graphic hybrid of Soviet Expressionism and Fifties comic book styling, Red Son is a charming and potent work.” —The Guardian
“It is an interesting analysis of the Superman mythos, as well as Superman himself.” —Examiner
“A strong character study.” —PopMatters
Named one of “The 30 Comic Books You Should Have Read” by Empire Magazine.
Named one of “The 20 Best Graphic Novels of the Decade” by Paste Magazine
One of “12 Superman Stories Everyone Absolutely Needs To Read” by Buzzfeed
Another fun Elseworlds book is "Batman: The Doom That Came to Gotham" which puts Batman into the H.P. Lovecraft universe.
Batman: The Doom That Came to Gotham is a limited series published by DC's Elseworlds and created by Mike Mignola. The story places Batman as a pulp hero adventurer in the 1920s where he battles against H.P. Lovecraft-inspired monsters.
I'm not quite sure what you were looking for but I hope this helps get you started.